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Run results for:
querySelector scope vs no scope
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser:
Chrome 129
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
querySelector scope
2782311.8 Ops/sec
querySelector no scope
3409103.0 Ops/sec
HTML Preparation code:
<div id='parent'> <div class="foo"> <div class="bar"> <div class="baz"> </div> </div> </div> </div>
Script Preparation code:
let parent = document.getElementById('parent');
Tests:
querySelector scope
document.getElementById("parent").querySelector(':scope .baz')
querySelector no scope
document.getElementById("parent").querySelector('.baz')